fix buildSearchQueryPayloadCollection: add body.aggs on result

Author: alexkovt

src/ElasticEngine.php

@@ -136,6 +136,7 @@ public function buildSearchQueryPayloadCollection(Builder $builder, array $optio
                 ->setIfNotEmpty('body._source', $builder->select)
                 ->setIfNotEmpty('body.collapse.field', $builder->collapse)
                 ->setIfNotEmpty('body.sort', $builder->orders)
+                ->setIfNotEmpty('body.aggs', $builder->aggregates)
                 ->setIfNotEmpty('body.explain', $options['explain'] ?? null)
                 ->setIfNotEmpty('body.profile', $options['profile'] ?? null)
                 ->setIfNotNull('body.from', $builder->offset)